8y-7x
x+7x+3y-y =8x+2y =2(4x+y)
-4(7x-3y-z)-(-6)(9x-z+2)
2y + 7x + y-1?
Right, 3x-4x+9x-x1. 3x - x = 2x2. 9x-4x = 5x- 2x +5x = 7x
4x-2y+3x+2y When simplified: 7x
8y-7x
It is 16y+23x simplified
x+7x+3y-y =8x+2y =2(4x+y)
-4(7x-3y-z)-(-6)(9x-z+2)
2y + 7x + y-1?
3x - 2y + 7x + 4y = 3x + 7x - 2y +4y = (3+7)x + (-2+4)y = 10x + 2y
-7x - 2y = -3
Right, 3x-4x+9x-x1. 3x - x = 2x2. 9x-4x = 5x- 2x +5x = 7x
4x + 8 + 7x + 12 = 11x + 20
4x+9 = 7x+3 4x-7x = 3-9 -3x = -6 x = 2
As there are no parentheses then the expression stated can be simplified as follows :- 7x - 4x - 9 = 3x - 9 If the parentheses were placed (7x - 4x) - 9 then the result would be the same. If the parentheses were placed 7x - (4x - 9) = 7x - 4x + 9 = 3x + 9.